{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["RNA", "cell type", "DNA", "protein", "cell line"], "input": "PMA , which directly activates PKC, mimicked the effect of the lectins on c-Fos and c-Jun , but elevation of either intracellular Ca2+ or cAMP levels had little or no effect."}
{"RNA": [], "cell type": [], "DNA": [], "protein": ["c-Jun"], "cell line": []}